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U.S. Census Bureau. "FAQ - How DO You Define Race?" https://ask.census.gov/cgi-bin/askcensus.cfg/php/enduser/std_adp.php?­p_faqid=263&p_created=1077639822&p_sid=YxkyU2Si&p_accessibility­=0&p_redirect=&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2d­yaWRzb3J0PSZwX3Jvd19jbnQ9MjU0LDI1NCZwX3Byb2

U.S. Census Bureau. "Historical Estimates of World Population." http://www.census.gov/ipc/www/worldhis.html

Geek chic: Is it a style, a trend, a movement, a cultural shift or just a love affair with all things uncool? First off, what is a geek? If you're getting ready to argue about this definition, you might be one of them.